Question 126973 in Android Studio Question posted in
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Android Studio – Android Studio / Kotlin: cannot run app on an physical device ("Couldn't terminate the existing process for…")

I am new to Kotlin, and currently building my very first app (I am not experienced at all on the topic).

I successfully managed to customize my android phone and my android studio and achieved to launch the app I am currently working on a few times.

However, I now run into an error when trying to launch my app on my physical device. I get the following message: "Couldn’t terminate the existing process for com.example.diceroller.", as if it was still running. The icons to launch/stop the app also seem to be in a state where the app is running on the device.

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I have tried the following, without result:

  • close all running apps on the phone
  • reboot the phone
  • restart Android Studio
  • deactivate/reactivate USB debugging on the phone

The app does work fine on a virtual device.

Could you please give me any lead to follow to try and be able to test my app on a physical device? Thanks a lot!

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2

Answers


  1. 0

    Try to kill the daemon, open your terminal and write this

    adb kill-server
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  2. 0

    Thanks to @Pierre Masse for posting the question in a detailed format, which made it easier for me to identify that I was facing the exact same issue.

    I tried all the steps in the same order as mentioned by @Pierre Masse, however the outcome remained the same (unsuccessful).

    I also followed the solution posted by @Muhammad Rio, unfortunately this too didn’t work in my case.

    This is how I resolved the issue.

    • Delete the physical device from the Android studio Device Manager (When the phone isn’t connected).
    • Deactivate USB debugging on the phone.
    • Now reconnect the phone using the USB cable where it is detected by the computerlaptopMac as a normal device (StorageUSB charging)
    • Now reactivate USB debugging on the phone.
    • Once the phone is listed again under physical devices in Android Studio Manager, run the app. It should run normally.

    Thought of sharing this, so that a beginner like me doesn’t get demotivated at the first roadblock in his mobile development journey.

    Cheers to both Pierre and Muhammad for their inputs.

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